I don't have any knowledge of this specific production, but i have lived on a couple CCL ships and worked for their entertainment department. My educated guess is that they will not have live dogs on board for the show. Life on board a cruise ship is simply not consucive to the needs of a dog.
Thanks for replying JimmyCurry01!!!! I agree that it would not be easy. However...the dogs are an integral part of the show. I will be interested to hear more about this production. And hear what is cut to bring the show to 90 minutes.
I've heard the whole "Ireland" bit is cut out as is the character of Enid. A friend was cast in it and that's what they heard through the grapevine when the offers went out. Not sure.